Lamp-socket shell.



H. T. vMISTE.l vLAMP SOCKET SHELL.

y APrLwAmoE 11111111511111111111. 1911.

Patented Feb. 18, 1913.l

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for engagement with :i engaging ring prior sfrnins N ATENT FFICE HENRY E'AISTE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO IH. T. PAIS'IE C'MPANY, 0F HILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANAJ Speccfation of Letters Iatent.

PatentedFeb. 1 8, 1913.

Application led June 13, 19,11.` Serial No. 632,932.

My invention relates to novel menus for l detachsbly connecting the cap with the body portion of a lomp socket; one object of the invention being to provide a relatively simple and inexpensive connecting device whereby the two parts of the socket shall be coupled or held together to prevent their accidentel separation, without the necessity of turning one of the parts relatively to the other iii order that the (catchesl on one of the parts muy properly engage a recess in the other pirt.

. it is further desired that after the body of the socket has been inserted in the cap a suflicient distance, it shall not be possible to draw it strai ht out, nor for it to become accidentally dis edged even though it be not turned; the invention contemplating a novel structure on one of the p'urts of the socket other part whereby said two parts will be operatively connected after one of them has 'been pushed intothe other a predetermined distance.

` These objects and other advantageous ends It secure iis hereinafter set forth, refer- Aence being had to the accompanying drawings, in which 4 Figure ll, is :i perspective view of the cap and body of alnmp socket constructed :iccording to my invention; Fig. Q, is a vertical section on on enlarged scale illustrating the detail construction of the socket; Figs. 3 and 4 :ire frngmentiiry sections illustrating the catches of the body in two ot' their possible positions relatively to the cup, and Fig. 5, is a perspective view of a part of the capto its mounting in the oep of the socket.

ln the above drawings 1 represents the body ot' n lamp socket and 2 the cop, the former being provided r ith die well known key slot and having sets et outwardly projeeting catches or barbs 4; these being in the present instance arranged in two puirsd'iiinietrically o positel each other. ln addition the luppeiie gc of two pairs oto-.itwerdiy projecting tongues 5 the catches :on thev the body is provided with foithe purpose of limiting its possible revolution relatively to the cap 2. The latter is ,provided with the customary bushing 6 for the' reception of the current conductors and at its ait of widest diameter is made substantie ly cylindrical in form, 'as indicated at 7 for the reception of a piece of strip metall 8 curved into annular form so as to tightly fit within scid part of the cop. The outer .edgeof the cap is turned over as indicated at- 7n to retain the strip permanently in position, and this latter consists of a length of sheet metal Jformed with a series of somewhateloiigated apertures 9; the partitions separa-ting siiid openings bein pertially cut away as shown at 10 so tiat on one face of the stri there is provided a continuous ledge for t e reception of the barbs or catches 4. In assembling the strip .in the ccp, the former is bent to circular form und n fter being introduced in the cylindrical ortion of said cop, is permanently retaine in place by turning over the edge 9 thereof; it being noted that the strip is so placed that -the' cut or beveled faces ,of the partitions between the apertures 9,"fice inwardly. Wit-h this arrangement of pnrts,if it happens that when the body l is introduced into the cap, all

of the catches4 enter nperturcs9 in'the strip 8, then the parts of the socket are yheld together in the desired manner so that they can be separated only by a strong inward pressure on the body et a point adjacent the key slot 3, followed by a tilting movement of the body away from the cap. Heretofore, however, it has been ossible for one orV more of the barbs or cav ches 4 to strike one or more of the partitions between the apertures 9 in the strip 8 with the -result that it wus a comparatively easy metter for the body to be pulled or jarred out of the cap. These parts', therefore, frequently became separated with the consequent objectionable results. By my invention, however', if one` orinore ofthe catches or barbs 4 is o posite a partition between the apertures 9 w ien the body is pushed into the cap, the parts nre p strip 8 by reason of tliecutting away 011110 of the cap turned over as shown at- 7"'.

beveling of tue partitions between the aper tures 9; it'being obvious that this action occurs regardless o't whether the catch or barb enters one of the recesses 9 or springs into the space formed by the cut away portion ot 9 may be -cut away as heretofore described andl the outer edge of the cylindrical part 7 This cutting away of portions of the partitions between the openings 9 may be accomplished by the use of a suitable; cutter tinuoiis supporting shoulder so formed provides a well defined relatively sharp edge for the recept-ion and holding of the barbs or catches t on the body 1,.

l. rithe combination in a lamp socket of a cap includinfr a structure presenting a continiioiis anniilar shoulder and a series of recesses; with a body having a retaining catch placed to engage said shoulder and in position to enter any of the recesses.

2. The combination in a lamp socket of a cap; a strip fixed therein and having ananring, the

and the coni i i g tions, said vstrip having et niilar series of alternate o enings and parti cent the partitions forming with one Iside of all or said openings a continuons shoulder;

ortioiis adjsi and :i body having a catch or catches' laced to detachzibly engage the shoulder an enter the recesses. f

The combination in a lamp socket of n cap 'and a body, said body having a catch or catches; with a piece oit sheet materiel lined. in the cap and having a series of .openings therein for the reception ot the vcatches on the body; the ings being partially 'ont away to provide 'stipportingr surfaces for the catches in addition to those provided by the seid openings.v

l 4. The combination in e. lamp Socket of a cap and a body.; a catch body; and an elongated strip bent into annular form and fixed Within the cap; said strip having a series of openings and hei/ing the partitions between the openings partially cnt away on their inner faces to provide snpA porting surfaces for the catcher catches of the body in addition to those vprovided by the openings in the stripA name to this specification, in thepresenc'e'ni two subscribing witnesses.

HENRY T. PAS'TE.

Witnesses lNiLLiAii E. BRADLEY,

W'M. A. Bann.

or catches on the ln' testimonyv wheieet. l have signed rny i artiti ons between the open- 

